(来学网)胃蛋白酶作用的最适pH是
  • A.
    (来学网)6.5~7.5
  • B.
    (来学网)4.5~5.5
  • C.
    (来学网)7.0~8.0
  • D.
    (来学网)8.5~9.0
  • E.
    (来学网)1.5~3.5